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Sierra Ocean’s Iridium Communications IRDM Stock Holding History

Sierra Ocean’s Portfolio IRDM Stock Details IRDM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-33
Closed -$996 – 490
2025
Q2 		$996 Hold
33
– – ﹤0.01% 920
2025
Q1 		$902 Buy
+33
New +$967 ﹤0.01% 958

Other funds holding IRDM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $260M AUM 6.93% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Sierra Ocean's IRDM Position: Q3 2025 in Review

Sierra Ocean sold out of Iridium Communications (IRDM) in Q3 2025, closing a stake of 33 shares — an estimated $996 sold.

Sierra Ocean first reported a position in IRDM in Q1 2025 and held it in 2 quarters. The position peaked at $996 in Q2 2025. 324 funds tracked by Wall St. Rank hold IRDM as of Q3 2025.

  • Sierra Ocean reported no remaining Iridium Communications position as of Q3 2025 after selling out during the quarter.
  • Sierra Ocean sold 33 Iridium Communications shares in Q3 2025, an estimated $996.
  • Sierra Ocean first reported a position in Iridium Communications in Q1 2025 and held it in 2 quarters.
  • Sierra Ocean's Iridium Communications position peaked at $996 in Q2 2025.
  • 324 funds tracked by Wall St. Rank held Iridium Communications as of Q3 2025.

Based on Sierra Ocean's 13F filing for Q3 2025, filed 7 Nov 2025.